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Generac 86640 User Manual Page 19
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Section 1.5- TROUBLESHOOTING FLOW CHART
TEST 1-CHECK NO-LOAD
VOLTAGE AND FREQUENCY
VOLTAGE &
FREQUENCY
BOTH GOOD
VOLTAGE
&
FREQUENCY
BOTH HIGH
IVQE
VOLTAGE LOW,
FREQUENCY
GOOD
VOLTAGE
AND
FREQUENCY
Page 1.5-1
1
2
...
14
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17
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19
20
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22
23
24
...
119
120
RECREATIONAL
1
VEHICLE AND
1
INDUSTRIAL MOBILE
1
AC GENERATORS
1
Foreword
2
Magnetic Induction
5
A Simple AC Generator
5
A Typical AC Generator
6
Rotor Residual Magnetism
7
Field Boost
7
D AC Voltage Regulator
8
GENERAL:
9
DUAL WINDING. 1-PHASE SYSTEM:
9
Page 1.1-5
9
Page 1.1-6
10
Introduction
11
Generator Disassembly
11
Page 1.2-2
12
2^+1b 1.24 Megohms
14
Page 1.3-2
15
Tools and Equipment
16
Rotor Rotational Speed
16
Visuai inspection
17
Constant Excitation Test
17
Measuring Current
18
Measuring Resistance
18
Effects of Engine Power
18
Page 1.5-1
19
Page 1.5-2
20
CXCrTATtON
24
^ ^ WINDINO
24
TO EXCrTATION
24
ClftClHT BBBAKER
24
Test 16- Check Sensing Leads
25
PROCEDURE:
26
Page 1.6-6
26
© (2) (?) (6)
28
Page 2.1-2
29
Section 2.2- TIMING BELT
30
Timing Belt Installation
31
Section 2.3- CYLINDER HEAD
33
Valve Guide Clearance
34
Valve Guide Replacement
34
Valve Inserts
35
Camshaft Bearing Clearance
35
Valve Dimensions
36
Cylinder Head Assembly
36
Installation
37
Installation (Continued)
38
Oil Pump Removal
39
Inspection
39
Page 2.5-1
40
Section 2.6- ENGINE OVERHAUL
41
Inspection (Continued)
42
Page 2.6-3
43
Page 2.6-5
45
Assembly (Continued)
46
0<i ••»•nr evi'i
48
■ Bt-mu MM«»
48
Oil Pressure Check
49
Section 3.2- ENGINE OIL PUMP
50
Page 3.2-2
51
FABLE OF CONTENTS
52
Recommended Coolant
53
Water Pump
54
Thermostat
54
Types of Cooling Fans
55
Air Flotw- Pusher Fan Units
55
Air Flow- Suction Fan Units
55
Installation Manual
55
Compartment Fan
56
A Remote Radiator Assembly
56
Page 4.4-2
57
Operation
58
Customer Remote Heater
58
Page 4.5-2
59
D Corrosion of metal parts
61
Section 5.2- FUEL PUMP
62
Section 5.3- CARBURETOR
63
Page 5.3-2
64
Vapor Withdrawal System
66
Liquid Withdrawai System
66
Gas Carburation
67
LP Gas Conversion Kit
67
D Air Cleaner Assembly
68
Page 6.2-3
70
CH Pressure Reducer Valve
71
D Carburetor Assembly
71
Pressure Reducer Valve
72
Carburetor Assembly
72
General Description
74
Governor Maintenance
74
Governor Lubrication
74
Engine Governor Adjustment
74
Page 7.1-3
76
Governor Actuator Relay
77
Governor Actuator Adjustment
77
Electronic Governor Setup
77
Magnetic Pickup
78
_________
80
Page 8.1-2
81
Ignition Coil
82
Checking the Condenser
82
Contact Set
82
Check Governor Advance
82
Spark Plugs (Continued)
83
Ignition Timing
83
Checking Ignition Wires
83
Components
85
DC Alternator
85
DC Voltage Regulator
85
DC Alternator Description
86
DC Alternator Adjustments
86
Testing (Continued)
87
D Start-Stop switch
88
Page 9.3-2
89
Page 9.3-3
90
Battery (Continued)
91
Engine Control Circuit Board
92
Overspeed Shutdown Adjustment
93
Page 9.5-1
94
Page 9.5-2
95
Page 9.5-3
96
Page 9.5-4
97
Page 9.5-5
98
Page 9.5-6
99
TABLE OF CONTENTS
100
GENERATOR
101
102
Instailation
103
Panel Mounting
103
Description
103
POWER WINDING
105
CYLINDER HEAD FLATNESS:
106
Page 11-2
106
20 10.79)
107
I I I I
110
0 17 14 18
111
WIRING DIAGRAM (82134)
112
WIRING DIAGRAM (82661)
113
Page 11-10
114
WIRING DIAGRAM (82123)
115
Page 11-12
116
WIRING DIAGRAM (82660)
117
Page 11-14
118
Page 11-15
119
Page 11-16
120
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